Inverted gas-burner.



F. J. HUMPHREY.

INVERTED GAS BURNER.

APPLICATION FILED DEG. 10, 1912.

Patented Apr. 29, 1913.

COLUMBIA PLANOGRAPH c0" WASHINGTON. B4 c.

FREDERICK J". HUMPHREY, OF KALAMAZOO, MICHIGAN.

IN VER'IED GAS-BURNER.

Specification of Letters Patent.

Patented Apr. 29, 1913.

Application filed. December 10, 1912. Serial N 0. 735,893.

To all whom it may concern:

Be it known that I, FREDERICK J. HUM- PHREY, a citizen of the United States, residing at Kalamazoo, Michigan, have invented certain new and useful Improvements in Inverted Gas-Burners, of which the following is a' specification.

This invention relates to improvements in inverted gas burners.

My improved inverted gas burner is especially designed by me for use in gas lamps of the type illustrated and descr1bed in the application of this appllcant and Hubert R. Humphrey, filed September 11, 1911, Ser. No. 648,704, and I have illustrated the same herein embodied in such a structure as that is the form in which I have embodied the same in practice.

In gas lamps of this type, it has hereto fore been the common practice to provide cast iron burner bodies, which are very desirable, with burner tips of porcelain or earthy material, the tips being secured by threading them into the body. The burner bodies, however, being subject to the heat and the action of the gases change very materially, the walls becoming thicker, which breaks the threaded nipples of the burner tips permitting the tips to drop off, thereby destroying the mantles and frequently the globes and rendering the lamp inoperative until repaired. To repair such lamps an entirely new burner body is frequently required although only one of the several burner tips may have been destroyed or broken.

It is the main object of this invention to provide an improved inverted gas burner in which the porcelain or other burner tip members are not likely to be destroyed by the changes in the burner arising from the heat and gases to which it is subjected in use, and further, to provide a burner having these advantages which retains the advantages of the cast iron body and is simple and economical in structure.

Further objects, and objects relating to structural details will definitely appear from the detailed description to follow. I

I accomplish the objects of my invention by the devices and means described in the following specification.

' The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is clearly illustrated 1n the accompanying drawing forming a part of this specification, in which:

Flgure I is a side elevation of a gas lamp embodying the features of my invention, parts being broken away to show structural details. Fig. II is a detail section on a line corresponding to line 2-2 of Fig. I, through my improved gas burner. Fig. III is a slde elevation of the coupling member 6 employed in my improved gas burner. Fig. IV is a detail section corresponding to that of Fig. II, of a modified construction, the modification being in the coupling member and consisting of the omission of the annular flange 8. Fig. V is a side elevation of the coupling member employed in the modi' fication shown in Fig. IV.

In the drawing, similar reference characters refer to similar parts throughout the several views.

Referring to the drawing, the lamp deslgnated generally by'the numeral 1, is supported from the gas supply pipe 2.

As the details of the lamp other than the burner, form 110 part of my present invention, I do not describe the same herein.

The burner body 3 is formed of cast iron and is provided with a plurality of internally threaded burner passages 4E. The burner tip members 5 are formed of porcelain, magnesia, lava, or other suitable material of earthy character. The burner tip members 5 are connected to the burner body by coupling members 6 of brass or other suitable copper alloy or material other than iron. These coupling members 6 are externally threaded and threaded into the burner passages 42. The burner tip members 5 are internally threaded to receive the reduced portions 7 of the coupling members which are externally threaded as shown.

The coupling members of the structure shown in detail in Figs. II and III are provided with annular flanges 8 which engage the body member as shown.

The burner tip member 5 is threaded upon the reduced portion with its upper end against the shoulder and under side of the flange of the coupling member. In the structure shown, in Fig. II, the tip members 5 do not contact with the burner bodies at any point.

In the modification shown in Fig. II, the flange 8 is omitted and the coupling member is threaded into the body with the shoulder 9 formed by the reduced portion thereof substantially flush with the tag-e "or the bustion. In the structure shown in Fig. "11,

this is substantially true as only the thin edge of the flange is exposed and this is in the structure illustrated some distance from the peripheral edge of the tip member so that it is not exposed to the direct action of the flame and gases of combustion.

It has been quite common practice to ,pr0- vidc burner tips having integral threaded nipples threaded directly into the body 3 of the burner. Asstated, it is found that, in use, the body 3 being subject to the intense heat and the gases is modified or changed thereby so that the burner tips and nipples are crushed ;or broken oif permitting the burner tip members to drop, destroying the mantles fa'nd frequently the chimneys. To repair such lamps frequently necessitates new burner bodies as 'the bore of the passages are permanently changed and frequently parts of the tip members are embedded or clamped in the distorted threads of the body. It has b'eenattemptedto overcome this by making a very loose engagement between the threads of the members, but that is found insuflicien't owning to the change stated, in which the walls of the body are thickened and permanently changed -or modified. By my improvements, this objection is overcome and the changes in the body do not afl'ect the porcelain or other suitable tip member "5 and the same is not destroyed by such changes. The cou- .-pling member '8 is protected from the direct action of the heat and is not distortedor destroyed thereby.

My improved gas bu-rner is very economical to produce and as stated, effectively overcomes the objections noted.

The burner tip members should occasion require, may beeasily -rem'oved 'as-it'is found that, while the coupling members 6 do contract and expand somewhat with the heating, they return to substantially normal-form when cooled.

The coupling members 6 are preferably formed of brass. Metals other than iron might be used for this purpose, there being several copper alloys which would meet the requirements. While 1 preferably use burner tip members commonly known as porcelain tips, the tips formed of various earthy materials might be used with quite satisfactory results.

1 "have illustrated and described my improvernents in the form in which]: have embodiedthe same in practice. Ihave not attempted to illustrate or describe various modifications possible, for instance, in the 'form of the burner body, as the disclosure made will, Ibeli'eve, enable those skilled in the art to embody my improvements as conditionsmay require.

Having thus described my invention, what 1 cla'im is new and desire to secure by Letters Patent is:

1. In an inverted gas burner, the combination of a cast iron body member having an internally threaded burner -,passage, a brass coupling member threaded into said body member and provided with a projectingexternally threaded reduced portion and annular flange engaging the body member, the shoulder of the redueed portion being'fiush with the under side of thelfia-nge, and an internally threaded porcelain burner tip ='member' threaded upon 'thesaid reduced portion of said coupling member with its upper-end engaging the shoulder and flange thereof. V

2. In an inverted burner, the combination of a cast iron body member having an internally threaded burner passage, a brass coupling -membe'r threaded into said body member and'provided with a projecting ex- ;terna lly threaded reduced portion, and an internally threaded porcelain burner tip member threaded upon the said reduced portion o f-sa'id coupling member with its upper end engaging the shoulder thereot.

inverted burner the combination ofa cast :iron body member having an internally threaded burner passage, externally threaded coupling member of eopper alloy threaded-into 'said'body member and projecting -therefrom, and internally threaded burner tip member "of -;earthy material threaded upo'n the projecting portion of said coupling member. I

4:. in an inverted burner, the-combination of an iron 'body member "having an internally threaded burner passage, an externally threaded coupling member of metal other than iron threaded *into said body member and projecting therefrom, and {an --interna-l1y threaded burner tip member of earthy material threaded upon the projecting portion.

of saideoupling member.

5. In an invertedburner, the -combination of a oast ironbody member having an internally --thread-ed burner passage, a brass coupling member threaded into said body member and provided with a projecting externally threaded reduced :portion, the shoulder of the reduced portion bein-gsubstantially flush with "the edge ot-the body member, and an internally threaded porcelain burner tip member'threaded "upon said reduced portion of said "coupling member with its upper end engaging the shoulder thereof and abutting said body member.

6. In an inverted burner, the 'combina'tion of-a east iron body member having an 'internally threaded burner passage, an ex- In Witness whereof, I have hereunto set ternally threaded coupling member of metal my hand and seal in the presence of two other than iron threaded into said body Witnesses.

member, and an internally threaded burner FREDERICK P REY. [14. 5.] 5 tip member of earthy material threaded Witnesses:

upon said coupling member With its upper M, C. EDBERGH,

end abutting said body member. M. CONYER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

- Washington, D. G. 

